166015115 has 32 divisors (see below), whose sum is σ = 247618944. Its totient is φ = 104232960.

The previous prime is 166015051. The next prime is 166015117. The reversal of 166015115 is 511510661.

It is not a de Polignac number, because 166015115 - 2⁶ = 166015051 is a prime.

It is a super-2 number, since 2×166015115² = 55122036816926450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166015117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18245 + ... + 25785.

It is an arithmetic number, because the mean of its divisors is an integer number (7738092).

Almost surely, 2^166015115 is an apocalyptic number.

166015115 is a deficient number, since it is larger than the sum of its proper divisors (81603829).

166015115 is a wasteful number, since it uses less digits than its factorization.

166015115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7607.

The product of its (nonzero) digits is 900, while the sum is 26.

The square root of 166015115 is about 12884.6852891330. The cubic root of 166015115 is about 549.6031462250.

Adding to 166015115 its reverse (511510661), we get a palindrome (677525776).

The spelling of 166015115 in words is "one hundred sixty-six million, fifteen thousand, one hundred fifteen".